$(document).ready(function() {
	$("#demo").validate({
		rules:{
			"operations.operName": {
				required: true,
	    		maxlength: 30
			},
			"operations.operUrl":{
				required: true,
	    		maxlength: 255
			},
			"operations.remark":{
				required: false,
	    		maxlength: 500
			}
		}
	});
});